PISA. Retaining Wall System. The choice of professional contractors

Transcription

1 PISA Retaining Wall System The choice of professional contractors

2 PRODUCT CODE DESCRIPTION & DIMENSIONS (H x W x D) ~ WEIGHT PER UNIT No./M² No./ Lin M² UNITS PER PALLET 5501 Light Vertical Straight Unit x 200 x Light Vertical Tapered Unit x 200 x Left Hand Corner L/H & 150 x 300 x R/H 5132 Right Hand Corner L/H & 150 x 300 x R/H Capping Unit x 440 x Capping Unit (Check Availability) x 200 x 230 Advantages Won t rot like a wooden sleeper wall Virtually maintenance free No mortar required Ability to construct the wall yourself with no previous experience No pins needed Flexible system won t crack like a Self aligning brick wall No concrete footing required Ability to easily make steps. Internal and external to wall Range of capping units to suit your job

3 Colour range Ivory Autumn Gold Charlestone Bluestone Desert Sand NOTE: These colours are an indication only, please contact your nearest distributor to view sample colours.

4 Corners Curves Steps External Concave Curve Left Use left and right cornerstones alternately Internal 1st Course (and 3rd, 5th & 7th ) Right 2nd Course (and 4th, 6th & 8th ) Using straight PISA units you can create internal corners with the method detailed above. To create a convex curve use tapered units. Use Left tapered units on one course, right tapered units on the next, alternating up the wall. To create a concave wall use straight units. Minimum radius: 2400mm (Add 20mm to this for each course in the wall) Convex Curve Steps are easily created with Pisa by simply using standard units for risers and split face capping units for step treads. You can create internal or external stairs to your wall. Ask your Pisa salesperson for a Pisa Stair construction help sheet.

5 Walls up to 600mm in height PISA Height Tables Unreinforced retaining wall MAXIMUM HEIGHT ACHIEVABLE (mm) Footing Thickness (mm) Footing Width (mm) Footing Toe (mm) Hollow Block The wall height shown above applies for average soil conditions (Friction Angle>20 and cohesion factor > 5kPa). There must be no surcharge (ie no applied load or backfill slope > 1:4) Top Soil Undisturbed Soil Compacted sand or mortar bed layer Compacted crushed Rock levelling footing Distance to Footing Toe Footing Width Geo-textile Cloth Drainage layer of 12mm angular clear stone Drain >90mm Footing Thickness Walls over one metre in height (Engineer design required) *Note: These tables are indicative only. All walls over 1000mm in height must be designed and certified by an engineer. Geo-grid reinforced wall No-fines concrete constructed wall No-fines concrete. Depth determined by table. Top Soil Top Soil Undisturbed Soil Geo-textile Cloth Undisturbed Soil Geo-textile Cloth Compacted sand or mortar bed layer Compacted crushed Rock levelling footing Distance to Footing Toe Compacted select in fill area Geo-grid Perforated Drain >90mm Footing Thickness Compacted sand or mortar bed layer Compacted crushed Rock levelling footing Distance to Footing Toe No-fines Concrete Drain >90mm Footing Thickness Footing Width Footing Width General Notes applicable to all above design tables: All retaining walls are designed to AS 4678 (Including Amendment 1), for Structure Classification 3. All designs are based on the method published by the Concrete Masonry Association of Australia. All retaining walls over 1500 are designed for a live load of 5 kpa. All retaining walls up to 1500 are designed for a live load of 2.5 kpa. If live loads above these values are expected, these designs will not be appropriate. All walls are designed using Coulumb formula, except 900mm and 700mm high gravity walls which are also designed using Rankine-Bell formula. Cohesion is difficult to predict, is variable, may change over time, and is dependant on the effectiveness of surface sealing, surface drainage and subsurface drainage. Consideration must also be given for shrink\swell action of clay soils.

6 PISA tiered walls H1 PISA D n o t e s Colour Variation Due to the changes in raw material, variations in colour do occur. When ordering your product, order all elements of your project together to reduce the possibility of colour variation. We do not guarantee different batches will be the same colour. Efflorescence Efflorescence (a crystalline salt deposit) is a natural occurrence in masonry products. Efflorescence does not effect the structural integrity or strength of the product. Efflorescence will usually diminish and disappear in the course of time as the product is exposed to the elements. No responsibility will be accepted for the occurrence of efflorescence. Delivery When placing your order please confirm delivery zone pricing and minimum free delivery quantities applicable to your area. Maximum unloading time for deliveries is half an hour. Claims Claims must be reported within 48 hours of delivery. No claims will be accepted once product has been installed. Please contact the store where goods were purchased to report any concerns regarding product colour or quality. For technical assistance please call H2 H1 D ³2H1 y o u r s t o c k i s t H2 installation g u i d e 1. Planning Make a line where the front of the wall will be placed keeping in mind the 20mm setback per course. Measure lengths and heights of each section. Calculate the number of units required. If necessary contact your local Council for approval and for the location and depth of pipes and cables. 2. Excavate Remove soil to create a trench 300mm deep and 600mm wide. Shape slope to allow for 300mm of drainage material behind wall. 3. Prepare Base Compact base and ensure native soil is stable. Place Terrafix geotextile over the excavation and up the exposed face. Place sufficient well graded angular gravel in the trench and compact to achieve a minimum finished base of 150mm thick. 4. First Course Position a level string line to mark the location of the first course. Place the first course of units on the prepared base and ensure the unit is level front to back and left to right. 5. Stack Units Sweep off and place next course of units in a running bond pattern. (The middle of the units is approximately above the joint between adjacent blocks below.) 6. Backfill Place a 100mm Agi drain behind the first course and fill behind the wall with free draining granular material. Compact this material in 150mm lifts. Place and compact soil in front of the wall to ensure that at least half of the first course is buried. Stack more units and backfill until the desired height is achieved (900mm maximum in ideal conditions 7. Secure Capping On the last course of wall units place a line of 'masonry' adhesive or mortar on both sides of the tongue. Place the capping unit on top and apply pressure to secure. 8. Finish Grading Pull Terrafix geotextile to meet back of wall and place 200mm of soil on top. Slope the soil above and below the wall to ensure water will flow away from and not accumulate near the wall.